Psalm 127:4 in the King James Version
As arrows are in the hand of a mighty man; so are children of the youth.
Context
3 Behold, children are a heritage of the LORD. The fruit of the womb is his reward.
4 As arrows in the hand of a mighty man, so are the children of youth.
5 Happy is the man who has his quiver full of them. They won’t be disappointed when they speak with their enemies in the gate.